Club CDFreaks - Knowledge is Power - View Single Post - CD-DVD Speed

**geno888** · 10-09-2006

2 - Options: Disc Quality

These options are related to "Disc Quality" test, often called also disc scan.

General: These settings allow to select some general options on Disc Quality test.

Detect speed settings: Quality Test can be executed at different speeds. These speeds vary according to the burner model and firmware, and are retrieved by CD-DVD Speed every time that the "Disc Quality" tab is selected in the main window.

If this option is checked, CD-DVD Speed will automatically retrieve this information. If this option is unchecked, available speeds must be retrieved manually by the user (see Disc Quality Test for more details).

Show errors limits: This setting allow to select how graphs will be seen in the "Disc Quality" tab in the main window. To explain this option, it's easier to use images as examples.

Each burner executes a Quality Test in a different manner. Max error value considered as acceptable vary according the error measuring method used. For example, in Liteon drives all errors comprised in the interval between 0 and 4 are considered acceptable; all errors comprised in the region between 4 and 9 are bad, but still acceptable; all errors over 9 are unacceptable.

Checking this option, CD-DVD Speed will show in different colors these intervals, and make it easier to evaluate a scan with a quick look.

Unchecking this option, the graph will have an uniform background color (or a gradient if this option was selected in color options, as explained below).

Show statistics: When a test is completed, the user can select if CD-DVD Speed must show a summary of test statistics (see pic).

Unchecking this option, statistics will not be shown.

Show disc label: By checking this option, in the "Disc Quality" window, the disc label will be shown. Unchecking this option, label is not shown.

Quick Scan: Quality Test can be executed in two modalities: full (or complete), and quick.

Options to select if CD-DVD Speed must run quick or full scan are localized in the "Quality Test" window. Here there are only options regarding how the quick scan must be executed. Quick scan tests only some part of the disc, and not all disc, so this test is faster, but also less precise than the full scan.

Measure points: Quick scan consist in do scan only in some segments of the disc. User must select how many points of the disc must be tested changing this setting.

Sample length: This setting is the length of each segment to be scanned. To explain better these options, see the following schematic pictures.

In first example, are selected 20 segments, each with a size of 5 MB. In this way, the disc will be divided in 20 parts, and 20 segments of 5 MB will be scanned. The green squares are the segments of disc that will be scanned; white zones are ignored. The green square in the upper part is the full scan (to compare with the quick scan).

In second example, are selected 5 segments, 20 MB wide. In this way, the disc is divided into 5 parts, and in each part will be scanned a segment of 20 MB. Again, the green square in the upper part is the full scan (to compare with the quick scan).

Graph Limits: These options allow the user to select scale values of a graph.

Errors: This option allow to select maximum value showed in scale of errors graph.

There are two settings:

Automatic: CD-DVD Speed modify automatically graphic scale according to maximum value of measured errors. Start values are 10 both for C1/PIE and for C2/PIF, but is an error above these values is measured, scale will be automatically changed to a higher value.

Locked: The user select maximum scale value. Checking this option max value on the graph scale will be fixed to a precise value. If this option is selected, maximum value must be specified by user (see below).

Usually the option "Locked" is used by the user at the end of a Disc Quality Test. If the user is not satisfied by the scale of the graph, doing a right click on the graph it's possible to open global options in this panel to manually change graph scale.

C1 Errors/PI Errors: This setting is the maximum value that user must select if "Locked" option is checked. This value is applied to C1/PIE graph.

C2 Errors/PI Failures: This setting is the maximum value that user must select if "Locked" option is checked. This value is applied to C2/PIF graph.

Maximum speed: This setting is the max value showed in C1/PIE graph for reading/writing speed.

These values must be selected by user manually, both for CD and DVD media. For CD media I suggest a value of 53, and for DVD a value of 17, to improve graph readability.

Colors: In this panel it's possible to customize colors of Disc Quality Test.

Some predefined themes are available, but users can modify manually any available color.

Important: To manually change any color, it's necessary to select the "Custom" theme, or any color modification will be ignored. Again, I suggest not to change colors randomly, to avoid an unreadable graph.

Available options are:

Background 1: Background color of the graph window.

Background 2: Checking this item, background color will be the one selected in previous option and will be progressively shaded to the color selected in this option. Unchecking this item, background color will be uniform, the one selected in previous option.

Grid (primary): The color of primary grid.

Grid (secondary): The color of secondary grid

Show horizontal grid: Checking this option will be shown horizontal grids. Unchecking this option, horizontal grid will not be shown.

Show vertical grid: Checking this option will be shown vertical grids. Unchecking this option, vertical grids will not be shown.

C1/PIE: The color of the C1/PI Errors in the graph.

C2/PIF: The color of the C2 Errors/PI Failures in the graph.

Jitter: The color of jitter in the graph (only for burners that support this function).

Read speed: The color of read speed curve in the graph.

Write speed: The color of write speed curve in the graph. This curve is showed only if in "Transfer Rate" panel of global options of CD-DVD Speed is selected the option "Include Data Test".

10-09-2006	#10 (permalink)
geno888 Moderator, Editor & CD Freaks Guru Join Date: Jun 2005 Location: Italy Posts: 17,125	Re: CD-DVD Speed - A user guide 2 - Options: Disc Quality These options are related to "Disc Quality" test, often called also disc scan. General: These settings allow to select some general options on Disc Quality test. Detect speed settings: Quality Test can be executed at different speeds. These speeds vary according to the burner model and firmware, and are retrieved by CD-DVD Speed every time that the "Disc Quality" tab is selected in the main window. If this option is checked, CD-DVD Speed will automatically retrieve this information. If this option is unchecked, available speeds must be retrieved manually by the user (see Disc Quality Test for more details). Show errors limits: This setting allow to select how graphs will be seen in the "Disc Quality" tab in the main window. To explain this option, it's easier to use images as examples. Each burner executes a Quality Test in a different manner. Max error value considered as acceptable vary according the error measuring method used. For example, in Liteon drives all errors comprised in the interval between 0 and 4 are considered acceptable; all errors comprised in the region between 4 and 9 are bad, but still acceptable; all errors over 9 are unacceptable. Checking this option, CD-DVD Speed will show in different colors these intervals, and make it easier to evaluate a scan with a quick look. Unchecking this option, the graph will have an uniform background color (or a gradient if this option was selected in color options, as explained below). Show statistics: When a test is completed, the user can select if CD-DVD Speed must show a summary of test statistics (see pic). Unchecking this option, statistics will not be shown. Show disc label: By checking this option, in the "Disc Quality" window, the disc label will be shown. Unchecking this option, label is not shown. Quick Scan: Quality Test can be executed in two modalities: full (or complete), and quick. Options to select if CD-DVD Speed must run quick or full scan are localized in the "Quality Test" window. Here there are only options regarding how the quick scan must be executed. Quick scan tests only some part of the disc, and not all disc, so this test is faster, but also less precise than the full scan. Measure points: Quick scan consist in do scan only in some segments of the disc. User must select how many points of the disc must be tested changing this setting. Sample length: This setting is the length of each segment to be scanned. To explain better these options, see the following schematic pictures. In first example, are selected 20 segments, each with a size of 5 MB. In this way, the disc will be divided in 20 parts, and 20 segments of 5 MB will be scanned. The green squares are the segments of disc that will be scanned; white zones are ignored. The green square in the upper part is the full scan (to compare with the quick scan). In second example, are selected 5 segments, 20 MB wide. In this way, the disc is divided into 5 parts, and in each part will be scanned a segment of 20 MB. Again, the green square in the upper part is the full scan (to compare with the quick scan). Graph Limits: These options allow the user to select scale values of a graph. Errors: This option allow to select maximum value showed in scale of errors graph. There are two settings: Automatic: CD-DVD Speed modify automatically graphic scale according to maximum value of measured errors. Start values are 10 both for C1/PIE and for C2/PIF, but is an error above these values is measured, scale will be automatically changed to a higher value. Locked: The user select maximum scale value. Checking this option max value on the graph scale will be fixed to a precise value. If this option is selected, maximum value must be specified by user (see below). Usually the option "Locked" is used by the user at the end of a Disc Quality Test. If the user is not satisfied by the scale of the graph, doing a right click on the graph it's possible to open global options in this panel to manually change graph scale. C1 Errors/PI Errors: This setting is the maximum value that user must select if "Locked" option is checked. This value is applied to C1/PIE graph. C2 Errors/PI Failures: This setting is the maximum value that user must select if "Locked" option is checked. This value is applied to C2/PIF graph. Maximum speed: This setting is the max value showed in C1/PIE graph for reading/writing speed. These values must be selected by user manually, both for CD and DVD media. For CD media I suggest a value of 53, and for DVD a value of 17, to improve graph readability. Colors: In this panel it's possible to customize colors of Disc Quality Test. Some predefined themes are available, but users can modify manually any available color. Important: To manually change any color, it's necessary to select the "Custom" theme, or any color modification will be ignored. Again, I suggest not to change colors randomly, to avoid an unreadable graph. Available options are: Background 1: Background color of the graph window. Background 2: Checking this item, background color will be the one selected in previous option and will be progressively shaded to the color selected in this option. Unchecking this item, background color will be uniform, the one selected in previous option. Grid (primary): The color of primary grid. Grid (secondary): The color of secondary grid Show horizontal grid: Checking this option will be shown horizontal grids. Unchecking this option, horizontal grid will not be shown. Show vertical grid: Checking this option will be shown vertical grids. Unchecking this option, vertical grids will not be shown. C1/PIE: The color of the C1/PI Errors in the graph. C2/PIF: The color of the C2 Errors/PI Failures in the graph. Jitter: The color of jitter in the graph (only for burners that support this function). Read speed: The color of read speed curve in the graph. Write speed: The color of write speed curve in the graph. This curve is showed only if in "Transfer Rate" panel of global options of CD-DVD Speed is selected the option "Include Data Test".